One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,13)(8,14)(15,16)(17,18)(19,28)(20,29)(21,27)(22,24)(23,25)(26,30)(31,32)(33,34,39,42)(35,37,41,47)(36,38,46,40)(43,48,44,45)(1,2)(3,7)(4,8)(5,6)(9,15)(10,13)(11,16)(12,14)(17,19,23,22)(18,24,25,28)(20,27,30,31)(21,29,32,26)(33,35,39,41)(34,37,42,47)(36,44,46,43)(38,45,40,48)(18,25)(20,30)(24,28)(27,31)(33,36,39,46)(34,40,42,38)(35,43,41,44)(37,45,47,48)(1,2)(3,7)(4,8)(5,6)(9,15)(10,13)(11,16)(12,14)(17,20)(18,26)(19,27)(21,24)(22,31)(23,30)(25,29)(28,32)(33,36)(34,38)(35,44)(37,45)(39,46)(40,42)(41,43)(47,48) involution — undirected(1,3,5,10)(2,7,6,13)(4,11,12,9)(8,16,14,15)(17,21)(18,27)(19,26)(20,24)(22,29)(23,32)(25,31)(28,30)(33,37,39,47)(34,41,42,35)(36,45,46,48)(38,43,40,44)(1,4,5,12)(2,8,6,14)(3,9,10,11)(7,15,13,16)(17,22,23,19)(18,28,25,24)(20,31,30,27)(21,26,32,29)(33,38)(34,36)(35,45)(37,44)(39,40)(41,48)(42,46)(43,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.